I think the real problem with them is the ever-present problem of replacing whatever battery pack it has. In some cases, the costs could reach up into the thousands, equivalent to a major engine repair or similar.
Frankly, I don’t think estimates for battery life by manufacturers are believable, often idealized and overstated.
Toyota claims to have never had a “dead” battery. The only replacements have been due o accidents.
We have a 2005 and a 2008 Prius. 2005 has 160K miles, the 2008 115K miles. The batteries are going strong, still fully charge (per the screen that shows this, which may or may not be totally accurate). We get between 45 and 50 MPG overall.
I don’t think any Prius batteries have had to be replaced except for accidents. Could be wrong on that.
Good cars. Never had any problems, except for the assumption that we are libs, which we can cure.